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Title: FPV weak video link Post by: parichya.gautam on March 05, 2015, 09:21:10 AM http://youtu.be/bHkUn6uh5IY (http://youtu.be/bHkUn6uh5IY)
As seen around 01:00 mark, at about the 50m from the launch site the feed the breaks, why is that !? Title: Re: Post by: v2 eagle on March 05, 2015, 11:11:48 AM This is quite a generic question. Post more info please.
Title: Re: FPV weak video link Post by: parichya.gautam on March 05, 2015, 01:56:23 PM i need to know the factors that can cause it ?
Title: Re: FPV weak video link Post by: parichya.gautam on March 05, 2015, 05:22:42 PM 900MHz is not used in india right ?
Title: Re: FPV weak video link Post by: subhashjk0508 on March 05, 2015, 05:27:34 PM did you use a separate lipo to power it or same one!! and also why is there a large voltage drop, in the OSD??
JK Title: Re: FPV weak video link Post by: SK1701 on March 05, 2015, 05:31:07 PM Also, what sort of antenna were you using? The voltage drop on the OSD is massive :o
Title: Re: FPV weak video link Post by: parichya.gautam on March 05, 2015, 06:48:46 PM subhash - yes, i have separate 1000mah lipo for the fpv.
sk - normal stock ones .. rubber ducky you call them i guess ? and regarding the voltage drop... i have no clue, it shouldnt do like that ? no clue ? it shows the quads LiPo if i am not wrong ... Title: Re: FPV weak video link Post by: Himadri Roy on March 05, 2015, 06:57:23 PM DO you have a LC filter on the FPV power supply?
Title: Re: FPV weak video link Post by: Himadri Roy on March 05, 2015, 07:01:41 PM Also is you power lines away from the FPV Tx as its a pretty high power TX?
Title: Re: FPV weak video link Post by: parichya.gautam on March 05, 2015, 07:02:02 PM umm i dont think so ... just connected the lipo to the setup
and no .. ! ... all the wiring were tucked away almost underneath the Tx .... :/ Title: Re: FPV weak video link Post by: Himadri Roy on March 05, 2015, 07:04:24 PM It can be problem as 0.8 W is a pretty high power Tx so its necessary for a LC circuit plus its necessary to place you power or esc or quad Rx away from the FPV setup as it can cause interference! :hatsoff:
Title: Re: FPV weak video link Post by: parichya.gautam on March 05, 2015, 07:06:01 PM hmm i think that could be an issue ... the wires were literally sticking with the Tx ..
ok .. and the LC .. what is it ? and here do i get one ? Title: Re: FPV weak video link Post by: Himadri Roy on March 05, 2015, 07:11:30 PM Build one! Its a capacitor(220uF-1000uF) and a ferrite ring with coil wrapped or the ferite ring that comes with the HK f-30a esc(inductor)(should be available at local electronics shop)...basically a power filter as videos then to get disturbed at slightest of power glitch
All under rs 20! Title: Re: FPV weak video link Post by: parichya.gautam on March 05, 2015, 07:14:43 PM sent my stuff to gunnu, will contact him.
Title: Re: FPV weak video link Post by: Himadri Roy on March 05, 2015, 07:15:47 PM here's a link
www.youtube.com/watch?v=xDUoxsMpfYQ (http://www.youtube.com/watch?v=xDUoxsMpfYQ) Title: Re: FPV weak video link Post by: parichya.gautam on March 05, 2015, 07:16:30 PM and one thing ... there is one % icon in between lower side... whats that for ??
FPV signal or the TX ? Title: Re: FPV weak video link Post by: Himadri Roy on March 05, 2015, 07:18:23 PM % ? where?
Title: Re: FPV weak video link Post by: gunnu on March 05, 2015, 07:28:34 PM basic LC filter.. this will do the job..
Title: Re: FPV weak video link Post by: parichya.gautam on March 05, 2015, 08:50:56 PM you're the man here :D will you be able to do it ? I sent you the stuff .
Title: Re: FPV weak video link Post by: gunnu on March 05, 2015, 09:25:30 PM hmmm.. don't worry..
Title: Re: FPV weak video link Post by: akhilzid on March 06, 2015, 07:39:18 PM most probably low video range is because.
feeding more juice for the video tx that this one can handle(like powering 5v tx with 7.4v). or using another 900mhz radio with that like 900mhz telemetry. or something wrong with antenna rx/rx. Title: Re: FPV weak video link Post by: parichya.gautam on March 06, 2015, 07:43:35 PM ..
1> The Lipo i have for FPV is 1000mAh 3s 11.1v 2> YES ! The telemetry was ON ( but i didn't open MissonPlanner on my laptop so it wasn't being received, could it still create issues ? ) 3> Antenna shouldnt be an issue... Title: Re: FPV weak video link Post by: akhilzid on March 06, 2015, 08:47:32 PM video tx directly connected to lipo?
check spec sheet of video tx voltage range because some of the video tx will not bave inbuilt bec. or if you connected through external bec and the video tx have onboard bec then also have range issue(due to low voltage). Title: Re: FPV weak video link Post by: parichya.gautam on March 06, 2015, 08:52:05 PM No..
there is a Y cable. source from LiPO, separates to cam and Tx via the OSD Title: Re: FPV weak video link Post by: parichya.gautam on March 06, 2015, 08:55:15 PM http://www.hobbyking.com/hobbyking/store/__13442__900MHZ_800mW_Tx_Rx_1_3_inch_CCD_Camera_NTSC.html (http://www.hobbyking.com/hobbyking/store/__13442__900MHZ_800mW_Tx_Rx_1_3_inch_CCD_Camera_NTSC.html)
have this Title: Re: FPV weak video link Post by: Himadri Roy on March 06, 2015, 09:05:09 PM Is it a Tx Lipo? what's the c rating?
Title: Re: FPV weak video link Post by: parichya.gautam on March 06, 2015, 09:06:00 PM idk if its a "tx lipo" 20c
Title: Re: FPV weak video link Post by: Himadri Roy on March 06, 2015, 09:09:22 PM 20C is a good!
As its a 0.8W Tx its pulling lots of current well putting a high capacity cap(1000uF-3300uF) in parallel may solve the problem! Title: Re: FPV weak video link Post by: parichya.gautam on March 06, 2015, 09:12:27 PM ok ... guunu to the rescue ! :D
Title: Re: FPV weak video link Post by: gunnu on March 06, 2015, 10:04:55 PM don't worry... ;)
Title: Re: FPV weak video link Post by: parichya.gautam on March 07, 2015, 08:44:19 AM BTW telemetry cant be the issue, i remember it now, my telemetry is 433MHz ...
Title: Re: FPV weak video link Post by: gunnu on March 07, 2015, 10:18:19 AM i remember it now, my telemetry is 433MHz ... :giggle: confused :giggle:Title: Re: FPV weak video link Post by: parichya.gautam on March 07, 2015, 10:24:01 AM yea XD .. not now though.
Yup telem was 433, FPV is 900.. only reason i see now is the wires too close to the Tx and the circuit in between the radio |